Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1984-08-30
1986-12-30
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310313D, H01L 4108
Patent
active
046331174
ABSTRACT:
A surface acoustic wave device comprises a transducer 1 consisting of two electrodes 2 and 3 deposited on the surface of a substrate 4. Transducer 1 is a slanted chirped transducer with short fingers 5 and 6 to focus any acoustic wave generated in the transducer to a position along a line 8 spaced from transducer dependent on the frequency of the signal.
REFERENCES:
patent: 3919669 (1975-11-01), Hartemann
patent: 4049982 (1977-09-01), Cohen
patent: 4063198 (1977-12-01), Wagers et al.
patent: 4477784 (1984-10-01), Maerfeld et al.
Barnard Michael E.
Bloch Paul D.
Paige Edward G. S.
Budd Mark O.
National Research Development Corp.
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